Global Patent Index - EP 1569473 B1

EP 1569473 B1 2009-02-25 - Methods and apparatus for facilitating concurrent push-to-talk over cellular (POC) group communication sessions

Title (en)

Methods and apparatus for facilitating concurrent push-to-talk over cellular (POC) group communication sessions

Title (de)

Verfahren und Gerät zum Erleichtern vom gleichzeitigen Drücken-zum-Sprechen über zellulare Netzwerkgruppenkommunikationssitzungen (POC)

Title (fr)

Méthode et appareil pour faciliter les sessions simultanées de communication en groupe à poussoir de conversation sur des réseaux cellulaires (poc)

Publication

EP 1569473 B1 (EN)

Application

EP 04251117 A

Priority

EP 04251117 A

Abstract (en)

[origin: EP1569473A1] Methods and apparatus for facilitating concurrent Push-to-talk over Cellular (PoC) group communication sessions for a mobile station (102) are disclosed. A first PoC communication session (550) for a first user group (504) is maintained while a second PoC communication session (552) for a second user group (506) is concurrently maintained, where the second user group (506) has at least one common member (516) with the first user group (504). The second user group (506) may have at least one member (518, 520) which is not included in the first user group (504). Through a user interface, a PoC user may select between the first and the second user groups (504 and 506) for communication or combine the communications. In an alternative embodiment, all of the members (518, 520, and 522) of a second user group (604) may be included in a first user group (602). In a specific approach, encrypted data packets of a PoC communication sub-session are communicated during a PoC communication session. If a key for the encrypted data packets is known for the mobile station (102), the encrypted data packets are decrypted to facilitate the PoC communication sub-session involving the mobile station (102); otherwise the encrypted data packets are discarded. <IMAGE>

IPC 8 full level (invention and additional information)

H04W 84/08 (2009.01)

CPC (invention and additional information)

H04W 4/10 (2013.01); H04L 65/4061 (2013.01); H04W 76/45 (2018.02); H04L 65/1016 (2013.01); H04M 2215/2093 (2013.01)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

Designated extension state (EPC)

AL LT LV MK

DOCDB simple family

EP 1569473 A1 20050831; EP 1569473 B1 20090225; AT 424098 T 20090315; CA 2498372 A1 20050827; CA 2498372 C 20090901; DE 602004019631 D1 20090409; ES 2320763 T3 20090528; HK 1079649 A1 20090508